Does anyone have immune immortal intestinal parasites?

I do. I tried every possible drug but I can't kill mine.

I tried:

Mebendazole
Ivermectine
Niclosamide
Albendazole
Prasiquantel
Triclabendazole
Fenbendazole
Decaris
Artemisinin
Vermox

The only drugs left: Tribendimine and Nitazoxanide.
Tribendimine is not available on the market.
I don't know any other anti- parasite drugs.
Most of them target nematodes, I definitely don't have nematodes.
Should I switch to herbs?
I don't know what to do...